9results about How to "Achieve interference fit" patented technology

The utility model discloses a fuse with a limiting effect, which is characterized in that a shell is provided with a cavity, and the cavity is provided with an opening, a first sliding chute and a second sliding chute; protruding blocks are arranged on the two sides of the drawing piece, the protruding blocks slide in cooperation with the first sliding grooves, the drawing piece is provided with a cam part, the cam part slides in cooperation with the second sliding grooves, and the cam part is in interference fit with the opening. During the drawing action, the cam part crosses the opening and slides out of the shell; according to the structure, when the fusion tube needs to be replaced, the drawing piece performs drawing action, at the moment, the convex block moves along the first sliding groove, the cam part moves along the second sliding groove, the cam part crosses the opening and slides out of the shell, and due to the fact that the cam part is in interference fit with the opening, the fusion tube can be replaced under the action of gravity or other slight mistaken touch. Therefore, the cam part is prevented from crossing the opening to enter the cavity, so that the limiting effect is realized, and the drawing piece is prevented from entering the cavity for the second time to influence replacement of the fusion tube.

The application discloses a 505 / 95R29 special high-load radial tire for nonferrous mine and a production process thereof, and relates to the technical field of tires. The application is characterized in that a concave V-shaped structure is arranged at the tire shoulder and the tire side, the transverse pattern groove of the tire tread extends to the tire side and is provided with a heat dissipation groove; the ring part is designed with full interference and is provided with anti-skid protrusions; a five-layer belt structure is adopted, the B1 belt layer is a two-piece small-angle split structure, and nylon reinforcing layers are arranged on both sides of the tire body. The application fills the design and development blank of the 505 / 95R29 special high-load radial tire for nonferrous mine by developing a new 505 / 95R29 special high-load radial tire for nonferrous mine and adopting a new production process, and solves the problems of insufficient load capacity of the current product of the large-tonnage wide-body vehicle and high failure.

The suction filtration funnel comprises a funnel body, a clamping nut, a mesh plate and a cylinder, the suction filtration device comprises a suction filtration bottle, a vacuum pump and the suction filtration funnel, the funnel body comprises a funnel body and a neck part, a flow guide conical surface is arranged in the funnel body, the neck part is communicated with the bottom of the funnel body, a first step surface is arranged on the flow guide conical surface, and a second step surface is arranged on the neck part. The mesh plate is arranged on the first step face, the bottom of the clamping nut is turned inwards to form a second step face, internal threads are arranged on the inner side wall of the clamping nut, and external threads are arranged on the peripheral wall of the bottom of the cylinder. The suction filtration bottle is provided with a bottle opening and an extraction opening, the neck is inserted into the suction filtration bottle from the bottle opening, and the extraction opening is communicated with a vacuum pump through a vacuum pipe. After suction filtration is completed, the cylinder is screwed out, the funnel body is ejected out of the clamping nut by a certain distance, a solid sample source on the mesh plate can be completely exposed, a complete sample source filter cake can be conveniently taken out, the thickness and the distribution uniformity of the sample source are ensured, and the accuracy of an experimental result is improved.

The utility model relates to the technical field of medical instruments, in particular to an anti-restart switch for intercepting an infusion tube and infusion equipment. The anti-restart switch comprises a switch shell, and the switch shell comprises a first clamping part and a second clamping part. The cut-off assembly is used for cutting off the infusion tube in a state that the first clamping part and the second clamping part are connected in a clamping manner; the clamping assembly comprises a barb and a fixing hole which are respectively arranged on the first clamping part and the second clamping part, and the barb is clamped at the opening edge position of the fixing hole; the barrier shell is further provided with a limiting groove for containing the fixing hole. And the limiting grooves are matched with the barbs in size. The limiting groove and the barb which are matched in size can effectively prevent an operator from stretching a hand or a tool into the limiting groove and pushing the barb to be separated from the fixing hole so as to open the switch card. Therefore, the anti-restart switch card can effectively and completely eradicate repeated opening of the switch card of the infusion bag, and the potential safety hazard problem that the infusion bag is possibly reused is avoided.

The present invention belongs to the technical field of superconducting coil winding devices, and discloses a three-axis vector superconducting coil winding device for measuring physical properties under extreme conditions, comprising an integral coil frame, wherein a through-type cold hole is arranged at the center of at least one direction of the X-axis, Y-axis, and Z-axis directions of the integral coil frame, and coil component mounting grooves are symmetrically arranged at the connection between the surface of the integral coil frame and the two ends of the through-type cold hole, and a superconducting coil component is arranged inside the coil component mounting groove; the superconducting coil component comprises a superconducting coil arranged at the center of the coil component mounting groove, and a superconducting coil copper sheath is arranged on the surface of the superconducting coil. The magnetic field vector of any direction and required size in three-dimensional space is realized by superposition of three-axis orthogonal axial magnetic field vectors, and an experimental method in which the sample is not moved and the magnetic field angle rotates is realized, and the complex mechanical sample transmission mechanism is removed, and the heat load of the sample is effectively reduced, so that the sample can reach a lower experimental temperature.

This utility model relates to the field of cotton harvester parts processing technology, and discloses a stamping device for spindle removal and assembly. It includes a worktable with a stamping platform on it. A column is mounted on one side of the stamping platform, and a connecting plate is mounted on the upper end of the column. A stamping cylinder is mounted at one end of the connecting plate. A turntable is rotatably connected to the stamping platform. The turntable has multiple evenly spaced discharge ports for the stamped spindle rods to fall through. A storage box for collecting the spindle rods is located under the worktable. One side of the turntable is suspended above the storage box. A support sleeve is located on the turntable at the discharge port, with its upper surface designed to abut against the hexagonal ring of the spindle removal seat. After the piston rod of the stamping cylinder moves down, its end presses against the upper end of the spindle rod, thus breaking the interference fit between the spindle rod and the dust cover. When the turntable rotates to the suspended position above the storage box, the spindle rod falls through the discharge ports into the storage box.

The present invention provides an automatic feeding and foolproof assembly device, comprising a base, four support columns vertically fixing the upper end surface of the base, a fixing plate fixed to the upper ends of the four support columns, a lifting assembly sliding up and down along the support columns, a transfer assembly arranged on the lifting assembly, and a lifting cylinder driving the lifting assembly to lift and lower, the upper end surface of the base is provided with a product seat for placing a cover, and the product seat is located in the middle of the four support columns. The present invention has the advantages of foolproof function, high assembly efficiency, and high degree of automation.

The invention relates to the technical field of electric heaters, and discloses a front shell device and an electric heater. The front shell device comprises a mask, an integrated mounting frame and a voice control assembly; the mask is used for being connected to a machine body of the electric heater, and a mounting cavity is defined by the mask and the machine body. The integrated mounting frame is arranged in the mounting cavity and is connected with the mask; a first mounting position and a second mounting position are arranged on the integrated mounting frame at an interval and are both positioned on one side, far away from the machine body, of the mounting frame; the voice control assembly comprises a voice input structure and a voice output structure, and the voice input structure is installed at the first installation position; the voice output structure is installed at the second installation position. According to the front shell device, the voice input structure and the voice output structure are connected to the position away from the machine body, the voice input structure and the voice output structure are protected, and the situation that heat dissipated by the machine body of the electric heater influences voice control assemblies such as the voice input structure and the voice output structure is avoided.

The invention relates to the technical field of electric heaters, and discloses a front shell device and an electric heater, the front shell device comprises a mask, a first mounting rack, a second mounting rack and a voice control assembly; the mask is used for being connected to a machine body of the electric heater, and a mounting cavity is defined by the mask and the machine body. The first mounting frame is arranged in the mounting cavity and is connected with the mask; the second mounting rack is arranged in the mounting cavity, is connected with the mask, and is spaced from the first mounting rack; the voice control assembly comprises a voice input structure and a voice output structure. The voice input structure is installed on the side, away from the machine body, of the first installation frame. The voice output structure is installed on the side, away from the machine body, of the second installation frame. According to the front shell device, the voice input structure and the voice output structure are connected to the position away from the machine body, the voice input structure and the voice output structure are protected, and the situation that heat dissipated by the machine body of the electric heater influences voice control assemblies such as the voice input structure and the voice output structure is avoided.